Sendy

Lightweight Solana transaction sender. Pre warms connections and sends transactions via QUIC directly to leader TPU nodes. Lets get sendy!

No retry logic at the moment.

Modes

SSE Mode

Uses SSE endpoint for leader tracking. No RPC required. Shoutout to https://github.com/trustless-engineering/leader-stream/

sendy --port 1337 sse --sse-url https://areweslotyet.xyz/api/leader-stream

gRPC Mode

Uses Yellowstone gRPC for slot updates and RPC for leader schedule.

sendy --port 1337 grpc \
  --grpc-url https://your-yellowstone-grpc:443 \
  --rpc-url https://api.mainnet-beta.solana.com

Options

--port                    HTTP port (default: 1337)
--identity-keypair-file   Path to keypair file (optional, uses ephemeral if not set)

API

Standard JSON-RPC on /.

curl -X POST http://localhost:1337 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "sendTransaction",
    "params": ["<base64-encoded-tx>", {"encoding": "base64"}]
  }'

Build

cargo build --release